The formation of methemoglobin reduces the amount of oxygen available to body tissues.

血红蛋白的形成减少了身体组织可以得到的氧的数量。

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Humans have desecrated so many of earth's rainforests that there is less oxygen available than 4 years ago.

人类已经糟蹋了地球如此多雨林，以至于现在比起4年前已经减少了很多氧气。

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This accelerated growth also reduces the amount of oxygen available to other plant and animal species in the affected area; raising fears that it could destabilise fragile Marine ecosystems.

加速的增长减少了可供应给其他动植物的氧气量，特别是受灾区域；大大影响了海洋生态系统的平衡。

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Carbon dioxide emissions decrease the amount of available oxygen in water in two ways.

FORBES: Carbon Emissions Threaten The Fishing Industry By Shrinking Fish Sizes

Being able to directly access their minds, as a reader, was like discovering an abundant, perpetually replenished, and freely available source of mental oxygen.

NEWYORKER: Olds Rocket 88, 1950